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A137386
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Numbers that when mirrored vertically are still valid characters. Only applies when numbers are scribed in Arabic numerals.
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1
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0, 1, 3, 6, 8, 9, 10, 11, 13, 16, 18, 19, 30, 31, 33, 36, 38, 39, 60, 61, 63, 66, 68, 69, 80, 81, 83, 86, 88, 89, 90, 91, 93, 96, 98, 99, 100, 101, 103, 106, 108, 109, 110, 111, 113, 116, 118, 119, 130, 131, 133, 136, 138, 139, 160, 161, 163, 166, 168, 169
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OFFSET
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1,3
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COMMENTS
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Equivalently, numbers that are composed only of the digits 0, 1, 3, 6, 8 and 9. - Andrew Howroyd, Jan 03 2020
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LINKS
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Andrew Howroyd, Table of n, a(n) for n = 1..1000
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PROG
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(PARI) a(n)={my(v=[0, 1, 3, 6, 8, 9]); fromdigits([v[1+d] | d<-digits(n-1, #v)])} \\ Andrew Howroyd, Jan 03 2020
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CROSSREFS
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Sequence in context: A133159 A188544 A163463 * A358510 A344952 A153307
Adjacent sequences: A137383 A137384 A137385 * A137387 A137388 A137389
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KEYWORD
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nonn,base
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AUTHOR
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Adam Risi (ajrisi(AT)gmail.com), Apr 09 2008
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EXTENSIONS
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Terms a(39) and beyond from Andrew Howroyd, Jan 03 2020
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STATUS
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approved
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